English Diphenylpyraline Cited by user Vanished 45kd09la13 on 14 Apr 2010 Diphenylpyraline (DPP; sold as Allergen, Arbid, Belfene, Diafen, Hispril, Histyn, Lergobine, Lyssipol, Mepiben, Neargal) is a first-generation antihistamine with…